Materials Data on KAg(PO3)2 by Materials Project

Abstract

AgK(PO3)2 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. K1+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of K–O bond distances ranging from 2.76–3.34 Å. Ag1+ is bonded to five O2- atoms to form distorted AgO5 trigonal bipyramids that share corners with five PO4 tetrahedra and an edgeedge with one AgO5 trigonal bipyramid. There are a spread of Ag–O bond distances ranging from 2.34–2.65 Å. There are two inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent PO4 tetrahedra and corners with two equivalent AgO5 trigonal bipyramids. There are a spread of P–O bond distances ranging from 1.50–1.64 Å. In the second P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent PO4 tetrahedra and corners with three equivalent AgO5 trigonal bipyramids. There are a spread of P–O bond distances ranging from 1.50–1.63 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one K1+ and two P5+ atoms. In the second O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent K1+, one Ag1+, and one P5+ atom. In the third O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one K1+ and two P5+ atoms. In the fourth O2- site, O2- is bonded in a 1-coordinate geometry to one K1+, one Ag1+, and one P5+ atom. In the fifth O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent K1+, one Ag1+, and one P5+ atom. In the sixth O2- site, O2- is bonded in a distorted single-bond geometry to one K1+, two equivalent Ag1+, and one P5+ atom.